“Dominique (Stahelin) then used the src probe in molecular hybridization experiments to look for evidence of src-related DNA, revealed by base pairing, in normal DNA from a variety of birds. The results were unambiguous and stunning: DNA closely related to the viral src gene was present in normal DNA—first from chickens and then from other birds, such as duck, turkey, quail, and even, most memorably, an emu we obtained from the Sacramento Zoo.” – Harold Varmus